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<div class="section" id="iterator-protocol">
<h1><a class="toc-backref" href="./changes-in-boost-1-32-0.html#id65" name="iterator-protocol">Iterator Protocol</a></h1>
<p>The library no longer guarantees or relies on the direct presence
of <tt class="literal"><span class="pre">advance</span></tt> / <tt class="literal"><span class="pre">distance</span></tt> / <tt class="literal"><span class="pre">next</span></tt> / <tt class="literal"><span class="pre">prior</span></tt> / <tt class="literal"><span class="pre">type</span></tt>
members in iterator types; the following table summarises the new
requirements:</p>
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<tr><th>Before</th>
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<tr><td><tt class="literal"><span class="pre">i::type</span></tt></td>
<td><tt class="literal"><span class="pre">deref&lt;i&gt;::type</span></tt></td>
</tr>
<tr><td><tt class="literal"><span class="pre">i::next</span></tt></td>
<td><tt class="literal"><span class="pre">next&lt;i&gt;::type</span></tt></td>
</tr>
<tr><td><tt class="literal"><span class="pre">i::prior</span></tt></td>
<td><tt class="literal"><span class="pre">prior&lt;i&gt;::type</span></tt></td>
</tr>
<tr><td><tt class="literal"><span class="pre">i::advance&lt;n&gt;::type</span></tt></td>
<td><tt class="literal"><span class="pre">advance&lt;i,n&gt;::type</span></tt></td>
</tr>
<tr><td><tt class="literal"><span class="pre">i::distance&lt;j&gt;::type</span></tt></td>
<td><tt class="literal"><span class="pre">distance&lt;i,j&gt;::type</span></tt></td>
</tr>
<tr><td><tt class="literal"><span class="pre">i::category</span></tt></td>
<td><tt class="literal"><span class="pre">i::category</span></tt></td>
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